1) show actual trades in real time they've made with their Interactive Brokers account

2) Follow other clients of Interactive Brokers and SEE what trades they are making.

So basicly, you register at the site, follow some other traders and you get a facebook like timeline that shows you trades trader who you follow have made.
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Added 31 JAN 2012, 18:56 PM EST
Of course: only users who have opted to make their trades public will be available to other users.